MCP server builder
Guides building MCP servers and tool integrations with examples and implementation workflow.
Anthropic
What this skill does
Supports creating MCP servers and tools that expose external functionality to agents.
Where, why and how to use it
Use when implementing an MCP server or tool surface. Follow current protocol docs and define narrow schemas and behavior before coding.
A development workflow; a skill does not validate a service's permissions, deployment posture, or runtime security.
Source location
anthropics/skills:skills/mcp-builder/SKILL.md
Compatibility and setup
MCP concepts are cross-host; sample tooling may assume a specific SDK/runtime.
Requires current SDK/docs, package environment, and controlled integration tests.
Boundaries
Least privilege, input validation, safe errors, and credential protection are required; don't expose unrestricted tools.
Source version
anthropics/skills main; unpinned. Reference checked 2026-10-14. Source verification does not mean this skill is installed, its connector is available or its service entitlement active.
Example instruction
Design an MCP server exposing read-only event lookup with bounded input and clear error states.